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Kirill Smelkov
linux
Commits
c639246f
Commit
c639246f
authored
Mar 07, 2002
by
Linus Torvalds
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Make sure no user level thing can trigger debug breakpoints
inside the kernel on x86 (TF is writable)
parent
ff418464
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arch/i386/kernel/traps.c
arch/i386/kernel/traps.c
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arch/i386/kernel/traps.c
View file @
c639246f
...
...
@@ -557,6 +557,8 @@ asmlinkage void do_debug(struct pt_regs * regs, long error_code)
* allowing programs to debug themselves without the ptrace()
* interface.
*/
if
((
regs
->
xcs
&
3
)
==
0
)
goto
clear_TF
;
if
((
tsk
->
ptrace
&
(
PT_DTRACE
|
PT_PTRACED
))
==
PT_DTRACE
)
goto
clear_TF
;
}
...
...
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